Author Topic: Shock and fork mods.... What works and what doesn't  (Read 3884 times)

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Offline sandblaster

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Shock and fork mods.... What works and what doesn't
« on: May 15, 2014, 05:08:18 PM »
We all spend a bunch of time fine tuning and modding our engines.
Yet, what would make us all improve our game is getting the suspension dialed in for our weight, riding style, and conditions.
I'll admit, the glory days of riding are behind me but I still ride and I want to ride faster over the rough nasty stuff then anyone else.
Sometimes I do and sometimes I don't  :roll:
So, thanks to Motorrad we have our Modded dog bones. THANK YOU!

What's next?
In the past I have always taken my bikes in and had the suspension done.
Oh sure I set the sag and played with the settings but that's it.
But recently I started disassembling my suspension, reading my Race Tech manual, and rebuilding my rear shock.
The mechanics of disassembling, putting in replacement parts, and reassembling are pretty straightforward.
Piston porting and shim stacks are well beyond me so I'm doing what the book and charts call for.

It occurred to me that one of the things that has happened over the years is reducing friction.
Friction causes heat and like it is in many other things heat is bad unless you are cold (Thanks Cap't obvious)
Besides heat, friction can cause uneven suspension actuation.
So, we see DLC coatings and different compounds of seals, fancy suspension lubricants ect.
As I was rebuilding my shock I looked at the inside of the shock body.
It feels smooth but it is by no means polished.
Wouldn't lightly polishing the interior of the shock body reduce friction with the Teflon piston seal?
Or, what about having .0002" of industrial Chrome plating put in there?

Comments or suggestions are always appreciated...
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline Goat

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Re: Shock and fork mods.... What works and what doesn't
« Reply #1 on: May 17, 2014, 04:17:17 PM »
Polishing would reduce friction but I think it need some kind of crosshatch holding oil to lubricate the seals on the piston as it moves in the housing but I could be wrong. I'm just looking at it as a piston with rings needs that oil film so the shock piston probably does as well.
It's hard to keep a drivers license riding a 2 stroke dirt bike on the street.  If you drive within the law they are VERY boring.

Offline sandblaster

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Re: Shock and fork mods.... What works and what doesn't
« Reply #2 on: May 17, 2014, 04:30:43 PM »
I was waiting for someone to reply  :-D
I briefly scanned over the Race Tech manual and reducing friction, even a little helps.
Then I confirmed with a road race suspension specialist that they polish everything internally and externally.
Well.... it's too late for my bike as I am already done with the suspension.
But who knows what is next  :-o
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Shock and fork mods.... What works and what doesn't
« Reply #3 on: May 18, 2014, 11:33:03 AM »
A little blurb on Hard Chrome Plating.
Low Coefficient of friction
Hard Chrome has a very low coefficient of friction, approx. one half that of Steel. The coefficient against Steel of 0.16 lubricated (0.21 dry), makes it ideally suited for such applications as Bearing and Seal surfaces, and machinery components.

Diamonds are awesome with a coefficient of friction of 0.1  :-o

Aluminum against aluminum is 1.05-1.35
Aluminum against mild steel is 0.61
Teflon against Teflon is .04
Teflon against steel is .4-.6

I'd really like to see aluminum against teflon using different surface finishes...

Anybody?
« Last Edit: May 18, 2014, 11:35:56 AM by sandblaster »
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline DoldGuy

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Re: Shock and fork mods.... What works and what doesn't
« Reply #4 on: May 18, 2014, 03:08:30 PM »
Hard Anodized.... :-D
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Offline sandblaster

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Re: Shock and fork mods.... What works and what doesn't
« Reply #5 on: May 18, 2014, 03:40:34 PM »
That's a good point.
I did find some info earlier on different types of anodization.
Once company claims their process is the best thing since beer  :wink:
I'll see if I can find the ad on it again.
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

Offline sandblaster

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Re: Shock and fork mods.... What works and what doesn't
« Reply #6 on: May 18, 2014, 03:43:12 PM »
 TMF offers low- to high-volume hard coat anodizing. Hard anodizing is not the be confused with common anodizing, in which a very thin coating of aluminum oxide is deposited on the surface of the metal. Hard anodizing requires a special process, which produces a dense layer of aluminum oxide both on and in the aluminum surface. The thickness of this coating typically ranges from 1 to 3 mils.

Any hard-anodized surface has a high degree of lubricity. Impregnated with lubricants, such as PTFE (TeflonŽ), hard-anodized aluminum surfaces have an even lower coefficient of friction.
The four stroke engine: That's one stroke for producing power and three for wearing the engine out.

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Re: Shock and fork mods.... What works and what doesn't
« Reply #7 on: May 18, 2014, 04:43:42 PM »
Dlc